INTEL-NTU CCC Project CIFI
August 15, 2011
INTEL-NTU Connected Context Center August 2011 Monthly Report
Project: Cooperative Information Fusion and Inference (CIFI) in SIGARC
PI: Professor Kwang-Cheng Chen
INTEL Champion: Dr. Kerstin Johnsson and Dr. Yen-Kuang Chen
1. Team Members
Research Assistants1: Wen Chon Ao, Hung-Bing Chang (leaving at August 31),
Sung-Yin Shih (start from September 1), Farming Tseng (start from September
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PhD Students: Tzu-Yu Chuang, Chu-Hsiang Huang (leaving July)
MS Students: Pin-Yu Chen (leaving July), Sung-Yin Shih (leaving July), Howard
Peng, David Liao
2. Discussion with Champion
After July PI meeting in Santa Clara, Project CIFI would take a few fine-tuning
steps to further clarify the project scope. The issues include less addressing of
multi-hop routing based on spectrum map, more study on spectrum sharing
wireless networks, slightly more investigations on fusion theory, and some initial
study on security for spectrum sharing networks.
3. Progress
Current research of project CIFI focuses on grounding technology development
and explorations. A few key issues are actively studied in July and August:
 Spectrum map: We focus on applying compressed sensing to construct the
spectrum map. In this month, we are writing up a paper to include
deriving compressed sensing to construct spectrum map, avoiding
communication overhead, analyzing the advantages of using spectrum
map for routing and tradeoff between communication overhead and
information acquisition, the minimum required information (even less
than theoretical bound) to complete compressed sensing to aid routing.
 We also hold an internal workshop (inside the project) to discuss M2M
communications, especially in the “swarm” (i.e. large and dense
machine/sensor (local) networks. It occupied 4 days in two weeks, to
report current research and future possible useful tools, such as
evolutionary game theory, diffusion, network coding, green cloud
computing, random and complex networks, universal source coding, etc.
The final brainstorming is summarized in a report and we are writing into
an article, along the direction of CIFI.
4. Brief Plan for Next Month
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Full-time research assistants with MS degree
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INTEL-NTU CCC Project CIFI
August 15, 2011
In the following month, we plan to study dynamics of spectrum sharing wireless
networks, architecture of local network and technologies to facilitate local
network. We shall start to develop spectrum-map based routing algorithms.
5. Research Byproducts
The following papers related to project CIFI have been published in the IEEE
Transactions on Wireless Communications (NTU and Center’s Outstanding
Journal) since last report.
[1] S.M. Cheng, W.C. Ao, K.C. Chen, “Efficiency of a Cognitive Radio Link with
Opportunistic Interference Mitigation”, IEEE Transactions on Wireless
Communications, vol.10, no. 6, pp. 1715-1720, June 2011. 3rd top accessed
article in June 2011, 7th in July 2011
(This paper proposes an enhanced opportunistic interference mitigation scheme
utilizing both successfully and unsuccessfully decoded primary packets to
improve data rate of secondary transmission. The interference mitigation
scheme can be applied to enable robust communication against cross-tier
interference thereby obtaining a substantial spectrum reuse gain.)
[2] S.Y. Lien, Y.Y. Lin, K.C. Chen, “Cognitive and Game-Theoretical Radio Resource
Management for Autonomous Femtocells with QoS Guarantees”, vol. 10, no. 7,
pp. 2196-2206, IEEE Tr. on Wireless Communications, July 2011.
(We propose the cognitive radio resource management scheme for femtocells to
mitigate cross-tier interference. Under such cognitive framework, a strategic
game is further developed for the intra-tier interference mitigation. Through the
concept of effective capacity, proposed radio resource management schemes are
appropriately controlled to achieve required statistical delay guarantees.)
In the mean time, the following paper is ranked among 100 Most Popular IEEE
Xplore papers (it is the second paper and third month for our paper into this
highly visible list):
S.M. Cheng, S.Y. Lien, F.S. Chu, K.C. Chen, “On Exploiting Cognitive Radio to
Mitigate Interference in Macro/femto Heterogeneous Networks”, IEEE Wireless
Communications, special issue on Heterogeneous Networks, vol. 18, no. 3, pp. 4047, June 2011. 8th top accessed article in June 2011. 5th in July 2011, 93rd IEEE
Xplore Top Download paper in July 2011
Up to this moment, we have been notified acceptance of 6 papers in the IEEE
GLOBECOM 2012, related to project CIFI.
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